Metallic window frame and sash.



No. 656,659. Patented Aug. 28, I900.

76. D. PRUDEN.

METALLIC WINDOW FRAME AND SASH.

(Application filed Nov. 6, 1899.)

(No Mbdel.)

Z/JiZnessea STATES PATENT FFICE.

METALLIC WINDOW FRAME AND SASH.

SPEGIFICA'IiON formingpart of Letters Patent No. 656,659, dated August28, 1900.

Application filed November 6, 1899. Serial No. 735,958. (No model.)

To a, whom it may concern:

Be it known that I, CLARENCE D. PRUDEN, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements in MetallicWindow Frames and Sashes, of which the following is a specification.

My invention relates to improvements in metallic window frames andsashes; and it consists in the novel construction and arrangement ofparts hereinafter set forth, reference being had to the accompanyingdrawings, forming part of this specification.

In the accompanying drawings, forming part of this specification, Figure1 is a vertical section through a window frame and sash embodying myinvention. Fig. 2 is a transverse section through the upper sash lookingdown upon the lower sash and showing the lower sash partly in section.Fig. 3 is a partial detail of the sash.

In the drawings, 2 is the top of the frame, 3 the bottom, and i thesides, formed of light sheet metal and suitably joined at the corners.The top and sides may be of any suitable configuration for architecturaleffect. The faces of the side pieces 4 are provided withoutwardly-projecting vertical ribs 5,constituting guides for thewindowsash, the metal between said ribs being inwardly bent to form aspace 6 to receive the weight-chain '7. The metal of the frame sidesbetween the sash-guides is carried inwardly to form a rib 8, over whichrib fits the bent end 9 of a partition 10, extending transversely acrossthe frame side. This partition 10 serves to support the front of theframe side and also to separate the weights, which are arranged uponopposite sides of the partition. The sash, which is also made of metal,is formed along its edge with flanges 11, which fit over the ribs 5, asshown in Fig. 2, and over stops 12 and 13, carried by the top and bottomof the frame. The inner faces of the sash are formed with central ribs14, against which the glass 15 is placed, said glass being held inposition by a removable strip 16, which fits into a groove 17 in thesash. When it is desired to place the glass in or remove it from thesash, it is only necessary to lift the strips 16 from the grooves. Adust-proof joint is effected between the upper and lower sash by theflange 18, carried by the upper sash, and the flange 19, carried by thelower sash, said flanges overlapping, as shown in Fig. 1, when the sashis in closed position.

Among the advantages of my improved metal window-frame sash is thecombination of ribs 5 of the frame with the ribs 11 of the sash. In caseof any looseness between the frame and sash above mentioned the ribs canbe bent toward each other to constitute a tight joint, and the spacebetween the ribs 5 also gives room for the chain of the weight. Anotheradvantage lies in the flanges carried by the upper and lower sash, whichflanges constitute a dust-proof connection between the sash, and bybeing a part of the metal sash can be bent in case of looseness tomaintain a tight joint. Another feature is the strips for holding theglass in the sash. These strips fit, as shown, in grooves in the sash,so that they can be easily inserted and removed,

and thus can hold the glass in place without the use of supplementarysecuring devices.

I claim-- 1. In a window frame and casing, the com bination of thevertical stiles of the framebody, provided with outwardlyprojectingribs, and a depressed portion between said ribs, and the sash providedwith flanges or ribs adapted to fit over the ribs of said stiles.

2. A sheet-metal sash provided with an inwardly-extending flange againstwhich the glass abuts, and formed with a groove adjacent to said flangeto receive a detachable securing-strip.

8. A sheet-metal sash provided with an inwardly-extending flange againstwhich the glass abuts, and a removable metal securingpiece adapted to bearranged in a groove adjacent to said flange to hold the glass againstsaid flange.

In testimony whereof I affix my signature in presence of two witnesses.

CLARENCE D. PRUDEN.

Witnesses:

H. S. JOHNSON, ELGIE H. EVANS.

